Traffic marker



Sept. 20, 1932. R og- 1,878,691

TRAFFIC MARKER Original Filed Jan. 12, 1928 .RgberLZ Zsfer,

Patented Sept. 20, 1932 warren star s rarest series ROBERT FOSTER, OF NEW YORK, N. Y., ASSIGNOR TO METAL TRAFFIC MARKER GOR- PORATION, A CORPORATION OF NEW YORK Titanium MARKER November 19, 1929.

The object of the invention is to provide improvements in traffic markers and the like, that is, improvements in means attachable to a street, pavement, or other surface, to guide or impart instructions totraffic, to define area limits, and for such other uses as the devices are adapted. This application being a division of application Serial No. 246,151, which matured into Letters Patent No. 1,7 4:7,667.

Heretofore, a marker has been developed which comprises a head portion, either made of or covered with a sheathing of material which possesses a permanently relatively bright, or light-reflecting surface, in combination with means carriedintegrally by said head and operative when driven into a given surface to secure the device to such surface.

Therefore, another object has been to provide a device of this character in which the attaching means is initially separate from but in use extends through an aperture in the head, the two elements being then secured together by a plate which serves as a preferably untarnishable covering for both the head and the attaching means, said means being in turn provided with alternate ridges and grooves, resembling screw threads of high pitch to aid in securing the device as a unit to a given surface. 1 With these and other objects in mind, the present invention comprises further details of construction and operation which are fully brought out in the following description, when read in conjunction with the-accompanying drawing, in which Fig. 1 is a vertical diametrical section through one embodiment of the invention; and Fig. 2 is an elevational view of the attaching means per se. p

Referring to the drawing, the present invention is shown as comprising a marker,

which consists of a circular head or disc lO, of any sultable material such as wrought or annealed cast iron, havlng a preferably consignature.

Divided and this application filed Serial No. 408,211.

minating upwardly in an enlarged head 15,

which is normally positioned in the groove 12, and downwardly in a tapering surface provided with ridges and grooves constituting screw threads 16 ofunusually high pitch, such as are particularly adapted for use upon drive screws. In this case the attaching means depends upon its spiral threads to prevent it from permitting the head 10 of the marker from becoming accidentally loosened or separated from the road or other surface. After the head and attaching means are assembled a plate 17 of metal sheathing is employed to cover both the head 10 of the marker proper and the head 15 of the attaching means, the margin 18 of said sheathing being turned radially outwardly or reversely under the correspond ing edge portion of the head or disc 10.

Having thus described my invention, what I claim and desire to protect by Letters Patent of the United States is A marker, comprising an annular head element having a central aperture, an attaching means extending through said aperture and intervenin g having a radially enlarged portion operative to limit the movement of saidmeans through said aperture in one direction, and a plate unitarily carried by and covering said head element and the adjacent end of said attaching means to prevent the removal of said attaching means from said head element in the other direction, said attaching means being provided With'threads of high pitch which permit said means to be driven into a surface by means of a blow upon said plate and operative to resist the removal of said last-named means from the material of a given surface after having been driven thereintoQ In testimony whereof I have afixed my ROBERT rosrnn.

vex upper surface 11, and through which extends an axially positioned aperture 12, ex

tending upwardly into a radiallyenlarged groove 13. Extending through said aperture is an attaching means ormember'which consists primarily in a circular shank 14,ter 

